Physics in web

Question

How can I simulate physics in web.
I know lot of js liblaries, but all of them must be installed first.
Please, find one which mustn't be downloaded.

Answer 1

I accidentally reprogrammed the physics of the universe in js and trust me you don't want to do that, very bad things happen...

Answer 2

have a look at this Code

https://code.sololearn.com/WD9F28pjySgy/?ref=app

Answer 3

https://code.sololearn.com/W179cPKUofEM/?ref=app
Take a look at this code.

Answer 4

Discribe the structure of universe's and our solar system?
Who know the answer?